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4k playback actually 4k?


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#1 TheRealDeria OFFLINE  

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Posted 17 June 2019 - 07:34 PM

I downloaded this tool and the android TV app for my Sony Bravia TV. When I play 4k content the 'gear' popup for settings says my video mode is 1080/60 and I cannot tap it to see other options but the 'stats for nerds' lists the video size as 4k. Is emby downscaling or is one of these things not accurate? If it is downscaling how can I prevent that? I've been using plex up to this point but its constant buffering has driven me nuts. Emby is playing the same files that plex chokes on but that won't do me much good if it's a scaled down version. It does indicate direct play so I'm at least sure it's not transcoding.

#2 pünktchen OFFLINE  

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Posted 17 June 2019 - 09:35 PM

The gear reports the Android GUI resolution which is always 1080/60 on those Sony tv and then is upscaled to your display resolution. The gear does not report the resolution the video is rendered nor the display resolution which always 4K.
So if you see no transcoding in stats for nerds than it's rendered at the native video resolution. Every video lower than 4K will be upscaled by the tv.

#3 ebr OFFLINE  

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Posted 18 June 2019 - 11:22 AM

During playback, the displayed resolution should be accurate.

 

Have you tried enabling refresh rate switching in the settings?



#4 TheRealDeria OFFLINE  

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Posted 19 June 2019 - 07:16 PM

I can give that a try and see what happens. The first post seems to imply that it should say 1080-60 though. I'll try it out when I get home though.

#5 TheRealDeria OFFLINE  

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Posted 19 June 2019 - 09:39 PM

During playback, the displayed resolution should be accurate.

 

Have you tried enabling refresh rate switching in the settings?

 

Hi -- tried this tonight and it still says 1080/60.0 in the "gear" icon.  The content that I'm playing is definitely neither 1080 in terms of resolution nor 60.0 in terms of frame rate.

 

Is anyone else seeing this behaviour with Android TV in general or Sony Bravia 4k TV's in specific?  I can't be the only one.



#6 ebr OFFLINE  

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Posted 20 June 2019 - 09:41 AM

I don't have that specific TV but, with my Shield, it shows the proper display mode:

 

5d0b8cf9eef40_displaymode.png

 

Can you play one of these items briefly (with the refresh rate enabled) and then send the log?



#7 pünktchen OFFLINE  

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Posted 20 June 2019 - 12:30 PM

Just believe me @ebr
resolution and/or refresh rate switching doesn't work under Android TV with Sony, Phillips and probably all the other tv manufactures. It doesn't even work with Kodi. It only works with the hdmi inputs.

#8 TheRealDeria OFFLINE  

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Posted 20 June 2019 - 07:26 PM

@ebr I can certainly get you a log, yes.

It would be pretty disappointing if 4k wasn't possible. I do have a Shoeld TV as well but my goal is to eliminate that since the TV should be more than capable.

#9 pünktchen OFFLINE  

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Posted 20 June 2019 - 09:32 PM

@ebr I can certainly get you a log, yes.

It would be pretty disappointing if 4k wasn't possible. I do have a Shoeld TV as well but my goal is to eliminate that since the TV should be more than capable.

Test it yourself: https://forum.kodi.t....php?tid=261768
The video link is dead but here's another one: https://mega.nz/#!io...u4Yd6rj0lbk5MzY

#10 TheRealDeria OFFLINE  

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Posted 20 June 2019 - 11:32 PM

I'll try it out.  I had found the article on the Kodi forum that you linked earlier tonight and was planning on trying it.  I'll post back with what I find.

 

I also read the log-posting article, so I'll go ahead and do that now as well.



#11 TheRealDeria OFFLINE  

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Posted 21 June 2019 - 12:12 AM

I don't have that specific TV but, with my Shield, it shows the proper display mode:

 

5d0b8cf9eef40_displaymode.png

 

Can you play one of these items briefly (with the refresh rate enabled) and then send the log?

 

@ebr Ok, I got the log and submitted it.  With or without refresh rate switching, the gear icon says the same thing (always 1080/60).  Subjectively, I would say that the refresh rate is truly 60 -- the action seemed too fluid, which is normally a 60hz thing.  The specific TV I have is a Sony x900f.

 

EDIT:  Oops.  Forgot to indicate user & time.  Use logged in was named "Default" (I'm so fancy with my custom names!) and the time was 9:46 pm Mountain.


Edited by TheRealDeria, 21 June 2019 - 12:27 AM.


#12 TheRealDeria OFFLINE  

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Posted 21 June 2019 - 12:26 AM

Test it yourself: https://forum.kodi.t....php?tid=261768
The video link is dead but here's another one: https://mega.nz/#!io...u4Yd6rj0lbk5MzY

 

Ok, so I tried that video on:

 

1) my 4k computer monitor -- bottom line is legible, so thats a good baseline

2) emby on the Sony X900F -- bottom line not legible at all

3) plex on the Sony X900F -- bottom line not legible at all

4) emby on Shield TV -- bottom line not legible at all

5) plex on Shield TV -- bottom line not legible at all

 

So...  I think all I've proven is that my computer monitor is pretty amazing?  Or, and this is entirely possible, the X900F is crap at rendering small text.

 

I can say for sure that Plex is using ExoPlayer v2 and Emby is using ExoPlayer (v1 presumably).  Since I can't really see any visual difference between the two I doubt that is the cause of any issues, though.

 

I'm not really sure what to make of this.  I probably wouldn't care too much about the 4k part of it, but the refresh rate is a deal-breaker.  Can't watch 24fps content at 60fps and remain sane.  That being said, I do have the option of using the Shield TV but then I'm still stuck with that thing's foibles.

 

This has to be possible, though.  I mean, Netflix is (as far as I can tell) doing it.



#13 pünktchen OFFLINE  

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Posted 21 June 2019 - 03:45 AM

... Or, and this is entirely possible, the X900F is crap at rendering small text.

Maybe. But mostly your tv is just bad calibrated.

 

This has to be possible, though.  I mean, Netflix is (as far as I can tell) doing it.

If you mean refreshrate switching on the Shield - not possible with the native Netflix app.



#14 ebr OFFLINE  

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Posted 21 June 2019 - 11:28 AM

I can say for sure ... and Emby is using ExoPlayer (v1 presumably).

 

That is NOT correct.  We are using Exo v2.  I cannot speak to exactly what Plex is using.



#15 ebr OFFLINE  

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Posted 21 June 2019 - 11:33 AM

Yep, your device is not exposing the 4k resolution to the Android system.  What crap...

06-20 21:44:42.929 21332 21332 I System.out: ** Available display refresh rates:
06-20 21:44:42.930 21332 21332 I System.out: 1080/60.000004



#16 pünktchen OFFLINE  

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Posted 21 June 2019 - 02:36 PM

Yep, your device is not exposing the 4k resolution to the Android system. What crap...

06-20 21:44:42.929 21332 21332 I System.out: ** Available display refresh rates:
06-20 21:44:42.930 21332 21332 I System.out: 1080/60.000004

Didn't i told you

#17 ebr OFFLINE  

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Posted 21 June 2019 - 02:40 PM

Didn't i told you

 

It wasn't that I didn't believe you - I just needed to be sure there was nothing we could do about it.

 

Does this mean the video is also not actually playing at 4K or just that the Android system is not reporting things properly?  That's the part I cannot confirm.  It would seem ludicrous that the video is not playing 4K if that is the source...



#18 pünktchen OFFLINE  

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Posted 21 June 2019 - 02:42 PM

4K is played at 4K, everything else is upscaled to 4K.

#19 TheRealDeria OFFLINE  

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Posted 22 June 2019 - 12:03 AM

That is NOT correct.  We are using Exo v2.  I cannot speak to exactly what Plex is using.

 

Ah.  I was basing my statement off the information presented on the display -- it just said "ExoPlayer" where Plex's client showed "ExoPlayer v2". Could just be a presentation thing though.



#20 TheRealDeria OFFLINE  

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Posted 22 June 2019 - 12:05 AM

4K is played at 4K, everything else is upscaled to 4K.

 

How can you be certain of that, though?  It would be nice if there was a way to definitely prove it.  That being said, though, the refresh rate is probably a more serious issue than the resolution.  From more than a few feet away 1080p and 4k look pretty similar to most people but anyone can tell 24fps content being played on a 60fps display.






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